Whether his plan could ever have been worked out will now never be known. That many of the evils he foresaw have followed persistence in slavery and sudden abolition is matter of certainty. Marshall Hall’s physical frame had been overtaxed by his exertions and struggles, and he became increasingly liable to severe laryngitis. Taking another continental trip in the winter of 1854-5, he showed his vivid intellectual energy by applying himself at Rome to the study of Hebrew. He engaged a Rabbi to teach him, and when awake at night or at early dawn, he worked at his new study with the zeal of a tripos candidate, and never did a pupil make more rapid progress. He ascended Vesuvius during the eruption of May 1855, a serious undertaking for a man of sixty-five. At Paris, in the summer, he wrote in three months a work in French, detailing his investigations on the spinal system, dedicated to M. Flourens, who had always shown the most generous appreciation of his labours as constituting a great epoch in physiology. Louis, the great physician, and his wife, were equally warm in their appreciation of and attachment to him. On December 5, 1855, Marshall Hall was elected a corresponding member of the French Academy of Science, by 39 votes out of 41. On returning to England towards the end of 1855, Marshall Hall’s mind fastened with characteristic eagerness on a new subject, suggested by reading the Humane Society’s “Rules to Restore the Apparently Drowned.” He remarked: “There is nothing in the treatment to restore respiration.” He at once thought out the question in the light of his researches on the physiology of respiration, and when he had mentally devised his system of restoration, proceeded to make experiments to test them. Hitherto it had been believed that it was useless to attempt to restore those who had been immersed three or four minutes. He said to the Secretary of the Humane Society: “If we take this for granted, we shall do nothing; surely it is worth while to make the effort to restore after a longer period.” His plan for producing artificial respiration, by turning the body first on the face, then on the side, and repeating the motion for a quarter of an hour, making equable pressure on the back of the chest when in the prone position, removing it when rotating on to the side, is known all over the world as the Marshall Hall method, and has saved thousands of lives. Numerous details are added to increase the efficiency of the treatment. But the Humane Society looked coldly on the novel plan, and long persisted in ignoring it. The National Lifeboat Institution wisely adopted it; the medical profession received it with acclamation; it was applied to the revival of still-born infants, and the restoration of those in danger of dying from asphyxia from other causes than drowning. At the same time when Palmer’s trial for poisoning was occurring, Dr. Hall drew attention to the facility